What is a sinus lift?
The maxillary sinuses are behind your cheeks and on top of the upper teeth. These sinuses are empty, air-filled spaces. Some of the roots of the natural upper teeth extend upwards into the maxillary sinuses. When these upper teeth are removed there is often just a thin wall of bone separating the maxillary sinus and the mouth. Dental implants need bone to hold them in place. When the sinus wall is very thin, it may be impossible to place dental implants in this bone.
One key to a successful and long-lasting dental implant is the quality and quantity of jaw bone to which the implant will be placed. If bone loss has occurred due to injury or periodontal disease, a sinus augmentation can raise the sinus floor and allow for new bone formation. The procedure seeks to grow bone in the floor of the maxillary sinus above the bony ridge of the gum line that anchors the teeth in the upper jaw. This enables dental implants to be placed and secured in the new bone growth.
Am I a candidate for a sinus lift procedure?
A sinus lift may be necessary if you:
- are missing one or more teeth in the back of your upper jaw
- are missing a significant amount of bone in the back of your upper jaw
- are missing teeth due to a congenital defect or other medical condition
- are missing most of the maxillary teeth and require support for dental implants
How is a sinus lift accomplished?
Most commonly, a small incision is made on the premolar or molar region to expose the jaw bone. A small opening is cut into the bone, and the membrane lining the sinus is pushed upward. The underlying space is filled with bone grafting material, either from your own body or from another source. Sometimes, synthetic materials that imitate bone formation are used. After the bone is placed and covered by a membrane, the incision is sutured and the healing process begins. After several months of healing, the bone becomes part of the patient’s jaw and dental implants can be inserted and stabilized in the newly formed sinus bone.
If enough bone between the upper jaw ridge and the bottom of the sinus is available to sufficiently stabilize the implant, sinus augmentations and implant placement can sometimes be performed as a single procedure. If not enough bone is available, the sinus augmentation will have to be performed first, then the graft will have to mature for up to several months, depending upon the type of graft material used. Once the graft has matured, the implants can then usually be placed.
The sinus graft makes it possible for many patients to have dental implants that previously had no other option besides wearing loose fitting dentures.
A sinus augmentation is generally performed at Dr. Werner, Dr. Rubel, Dr. Strange and Dr. Madson‘s office under IV sedation or general anesthesia. Some patients may request oral or intravenous sedative medication as well.